25230305 has 16 divisors (see below), whose sum is σ = 31256064. Its totient is φ = 19540800.

The previous prime is 25230277. The next prime is 25230313. The reversal of 25230305 is 50303252.

It is not a de Polignac number, because 25230305 - 2¹⁴ = 25213921 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23204 + ... + 24266.

It is an arithmetic number, because the mean of its divisors is an integer number (1953504).

Almost surely, 2^25230305 is an apocalyptic number.

It is an amenable number.

25230305 is a deficient number, since it is larger than the sum of its proper divisors (6025759).

25230305 is a wasteful number, since it uses less digits than its factorization.

25230305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 25230305 is about 5022.9777025187. The cubic root of 25230305 is about 293.2969185455.

Adding to 25230305 its reverse (50303252), we get a palindrome (75533557).

The spelling of 25230305 in words is "twenty-five million, two hundred thirty thousand, three hundred five".